Question 1

Toast vs Modal: which should I use?

Accepted Answer

Status that vanishes on its own vs a decision you must make. Prefer Toast / Snackbar when: Saved / Copied feedback; Light errors that don’t need a choice. Prefer Modal Dialog when: Delete confirmation; Legal consent; Any required choice. Interrupts work?: Toast / Snackbar — No — stays non-blocking.; Modal Dialog — Yes — blocks the page until dismissed.. User action: Toast / Snackbar — Optional single Undo at most.; Modal Dialog — Required: confirm, cancel, or equivalent.. Lifetime: Toast / Snackbar — Auto-dismiss in a few seconds.; Modal Dialog — Stays until the user responds.. When to use: Toast / Snackbar — “Saved”, “Copied”, light errors.; Modal Dialog — Delete confirm, legal consent, critical choice..

Question 2

Does the user need to decide something before continuing?

Accepted Answer

If yes, lean toward Modal Dialog; if no, lean toward Toast / Snackbar.

Question 3

Should the message disappear by itself?

Accepted Answer

If yes, lean toward Toast / Snackbar; if no, lean toward Modal Dialog.

Question 4

Is there a serious cost if they miss this message?

Accepted Answer

If yes, lean toward Modal Dialog; if no, lean toward Toast / Snackbar.

Dimension	Toast / Snackbar	Modal Dialog
Interrupts work?	No — stays non-blocking.	Yes — blocks the page until dismissed.
User action	Optional single Undo at most.	Required: confirm, cancel, or equivalent.
Lifetime	Auto-dismiss in a few seconds.	Stays until the user responds.
When to use	“Saved”, “Copied”, light errors.	Delete confirm, legal consent, critical choice.

Quick quiz